Bearing and method of constructing the same



J J. KNIGHT AND M. LEE. BEARING AND METHOD OF CONSTRUCTING THE SAME.

APPLICATIOIJ FILED JULY 22.1919.

Patented Sept. 28, 1920.

2 SHEETSSHEET 1.

A TTORNE YS L1. KNIGHT AND M. LEE.

BEARING AND METHOD OF CONSTRUCTING THE SAME. APPLICATION FlLD JULY 22,1919.

1 ,354,200. PatentedSept. 28,1920.

2 SHEETSSHEET 2.

WITNESS I Q I l V NTORS 10 1 pm? BY A TTOR NE YS I UNITED STATES? OFFICE! zroHN JAMES K IGHT, or ALAMEDA, AND MARK LEE,-,OF OAKLAND, CALIFORNIA.

BEARING AND Mnrrron or co sTRUc'rING THE SAME.

TaaZZ whom it may coawern:

Be it known that we, JOHN J. KNIGHT and MARK LEE, citizens of the United States,re-

'meda, State of California,"ha ve invented certainv newand useful Improvements in Bearings and Methods of Constructing the Same, of which the following is a spec1fication. 1

T he present invention relates to improve ments in bearings and to the method of making the same, and the invention has for its principal' obje'ct to provide a bearing construction which is capable of being quickly and cheaply manufactured; one which does not require scraping andwherein the same is capable of being formed in a rough casting recess in asuitable metallic body.

At present it is the practice, when forming certain types of bearings, to machine the bearing seat in the supporting body-and then to fit therein a previously cast bearing, and thence to scrape the same to provide the proper bearing surface for the shaft to be received therein, which method is very expensive owing to the time and labor required, and which materially increases the cost of articles having a number of bearings of this type. I

By the present method-the bearing seats are preferably roughly castin the supporting material and a mandrel of the required size'and shape is held in position therein and the bearing supporting material or base, preferably of Babbitt metal, isp'oured into the seat, which, when the mandrel is removed, provides a smooth surface for receiving the shaft supporting bearing, and which does not require scraping to properly seat the bearing therein.

To more fully comprehend the invention, reference is directed to the accompanying drawings, wherein- Figure 1 illustrates a body having bearing seats cast therein.

Fig. 2 discloses another step of the method wherein a mandrel is properly positioned within the seat and about which the babbitt is poured.

Specification of Letters Patent; Pa tentea S t 28 Application filed July 22,

1919. Serial No. 312,616."

Fig.4 is a view illustrating an anti-friction bearing received in the poured babbitt.

:Fig; 5 is a vertical sectional view taken,

, elusive of the drawings, the present method is preferably carried out as follows:

In the body 1 of any suitable material, such as a crank casing, frame or the like, is preferably formed during theformation of said frame bybeing cast therein, the bearing seats 2, which are somewhat larger than thebearing and shaft'to be received therein. q

Positioned on the upper planed surface 3 is a suitable mandrel or core mounting plate 4 held in'position in any suitable manner as by bolts 5, which pass through openings in the surface 3, and said plate carries on its underside suitable mandrels or core members 6 of the size'and configuration of the bearing to be received in the seat-s2, said mandrels being smaller than the seats 2', af-

fording a space 7 between the surface of the to extend laterally beyond the edge of the member 1, while the mandrel 6 at the right hand side of Fig. 2 is adapted for use informing what may be termed a blind or closed end bearing. With the mandrels positioned as in Fig. 2 of the drawings, and with the spaces between the end walls of the seats 2 and. the mandrel flanges 8 closed by suitable packing material 9,-the hot lining material, such as Babbitt metal, is poured into the space 7 completely filling the space between the mandrel surface and the sur face of the seats 2, and which, when cooled and the mandrels are removed, provides a lining or seat 10, Fig. 3 of the drawings, in

. which rests the outer shell 11, Figs. 4, 5 and 6 of the drawings, of a suitable'anti-friction,

roller or ball type of bearing 12, the inner sleeve 13 of which is tubular in form and is adapted to receive the rotating shaft 14.

By pouring the lining 10 in the seat 2 and making the same of a predetermined thickness to snugly receive the shell 11, said shell bearing by the present method that a number of linings are capable of being poured at the same time and an anti-friction bearing is adapted, for reception within each without further machining, scraping, or working of; the lining.

B emnlo in the mandrel or core illus- A I b trated at the left in Fig. 2 of the drawings,- we are enabled to provide-a-bearingseat or lining through which a shaft may extender,

project and snuglycontactwith the Babbitt metal forming the endof thelin ng and obtain a structure which is substantially lubri-f cant tight around the shaft without the necessity of employing threaded collars which are new universally in use. of Eaving thus described our invention, what we claim as new and desire to protect by Letters Patent is 1- e 1. The method of making a bearing con-' Siii'tlilg fir t in casting a bearing seat within a supporting body, thence positioning therein mandrel or core of the size of the bear- 1 ing to be mounted and smaller than said bearing seat to provide aspace between the surface of the mandrel or core l the surface of the seat, thence pouring the fluid metal into said space to-hne said seat and permitting the same to harden, and thence removing the mandrel or core and positioning an anti-friction bearing within the lined seat with the outer shell thereof resting on the surface of the liner.

2. The method of making a bearing consisting in first casting a bearing seat within the supporting bodyofa size greater than the shaft to be accommodated, thence positioning within said casting seat a mandrel or core of a size and configuration of the bear:

ing to be received, thence babbitting the intervening space between the mandrel or core and the bearing seat wall, thence removing. the mandrel or core and, positioning within said lined seat an anti-friction bearing with the outer shell thereof snugly fitting the surface of said liners. i

'3. A hearing consisting of a seat, a me 'tallio lining cast therein and of a conformation to snugly receive the anti friction bear- 1.: to be seated therein without scraping, a double shell anti-friction bearing resting on 'd iiningwith its outer shell in tight frictional contact with said lining, and a shaft extending throughzthe inner shell of said bearing.

4. The method of making a bearing, consisting in first casting an open'ended bearing within a supporting body, thence posi tioning therein a core a portion of which: is

the size of the bearing to bemounted and a portion projecting to'the outer open end of the bearing; seat being of a size correclosing the outer open end of said seat,

.70 spondin to that of the, shaft to extend beyond said support and a portion of said core thence habbitting the intervening space be- 1 tween the core and bearing seat and outer end wall, thence removing the core and positioning within said bearing seat a double sleeve roller type bearing 'with the outer shell thereof snugly fitting the surface of the liner and with the inner sleeve in alinement with the contracted outer end of said lined seat.

5; A bearing for a shaft having a procting end, comprising a cast seat, a mellic lining cast therein and providing a hearing receiving chamber having a contracted opening at one end of a diameter less than said bearing receiving chamber and corresponding to that of the shaft to extend therethrou h, a double sleeve anti-friction I. a Fr bearingresting in said chamber with its outer shell in tight frictional contact with said lining, the inner sleeveof the bearing and through said contracted opening.

in testimony whereof we have signed our a subscribing witness.

JOHN JAMES MARK LEE.

KNIGHT.

and a shaft extending through names to this specification in the presence of 

